Display panel and display motherboard

Abstract

The present disclosure provides a display panel and a display motherboard. The display panel comprises: a display substrate, comprising a display region and a peripheral region; a plurality of light-emitting elements arranged on the surface of one side of the display region of the display substrate; a packaging cover plate arranged on the side of the light-emitting elements away from the display substrate; and supporting columns arranged between the display substrate and the packaging cover plate and distributed at gaps of the plurality of light-emitting elements, wherein the orthographic projection of each supporting column on a plane where the display substrate is located comprises a main body region and a plurality of branch regions connected to end portions of the main body region, the main body area is located between adjacent light-emitting elements, and an included angle is formed between the extension direction of each branch region and the extension direction of the main body region.

Description

Display panel and display motherboard

[0001] This application claims priority to Chinese patent application No. 202310194751.0 filed on February 27, 2023, entitled “Display Panel, Display Motherboard, and Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure belongs to the field of display technology, and particularly relates to a display panel and a display motherboard. Background Art

[0003] This section is intended to provide a background or context to the embodiments recited in the claims. No admission is made that the description herein is prior art by virtue of its inclusion in this section.

[0004] Organic light-emitting diode (OLED) and quantum dot (QD) LED display panels are often packaged using an encapsulation structure. The encapsulation structure is located outside the display area (AA area) and surrounds the display area to prevent moisture from entering the display panel.

[0005] Summary of the Invention

[0006] The present disclosure provides a display panel, a display motherboard, and a display device.

[0007] In one aspect, an embodiment of the present disclosure provides a display panel, comprising:

[0008] A display substrate comprising a display area and a peripheral area;

[0009] a plurality of light-emitting elements, wherein the plurality of light-emitting elements are located on a surface of a display area side of the display substrate;

[0010] a packaging cover plate, the packaging cover plate being located on a side of the light-emitting element away from the display substrate;

[0011] A support column, wherein the support column is located between the display substrate and the packaging cover plate, the orthographic projection of the support column on the display substrate is located in the gap between the orthographic projections of the multiple light-emitting elements on the display substrate, and the orthographic projection of the support column on the display substrate includes a main body area and multiple branch areas connected to the ends of the main body area, the main body area and the branch areas are both located between adjacent light-emitting elements among the multiple light-emitting elements, and the extension direction of the direct area has an angle greater than zero and less than 180 degrees with the extension direction of the main body area.

[0012] Optionally, the plurality of light emitting elements are arranged in a plurality of rows along a first direction, and the plurality of light emitting elements are arranged in a plurality of columns along a second direction, and the first direction and the second direction are two directions parallel to and intersecting with the plane of the display substrate;

[0013] The main body area is a strip area extending along the second direction.

[0014] Optionally, two light-emitting elements adjacent to the branch region have at least one pair of parallel boundaries parallel to each other, the branch region is located between the pair of parallel boundaries, and the extension direction of the branch region is the same as the extension direction of the pair of parallel boundaries.

[0015] Optionally, the support columns in two adjacent rows of the light emitting elements are staggered along the second direction.

[0016] Optionally, at least some of the plurality of light-emitting elements are adjacent to the support column along the first direction, and a boundary of at least some of the light-emitting elements is polygonal, wherein the polygon includes a side opposite to a main region of the support column and a side opposite to a branch region of the support column;

[0017] At least some of the plurality of light emitting elements are adjacent to the support column along the second direction, and boundaries of the light emitting elements are polygonal, including sides opposite to the branch regions of the adjacent support column.

[0018] Optionally, along the second direction, the support pillars are distributed in alternate rows, and the support pillars are arranged in multiple columns along the second direction;

[0019] A single light-emitting element is provided between two adjacent support columns along the first direction, wherein the boundary of the single light-emitting element is a polygon, and the polygon includes a side opposite to the branch regions of the two support columns;

[0020] A single light-emitting element is disposed between two support pillars adjacent to each other along the second direction, and a boundary of the single light-emitting element includes an edge opposite to the branch regions of the two support pillars.

[0021] Optionally, the branch region is in the shape of a polygon or a smooth curve.

[0022] Optionally, the display panel further comprises: an encapsulation structure, the encapsulation structure being located between the display substrate and the encapsulation cover plate, and the encapsulation structure being located on a surface of one side of the peripheral area, and the encapsulation structure surrounding the plurality of light-emitting elements;

[0023] An auxiliary support column is located between the display substrate and the packaging cover plate, and between the area where the multiple light-emitting elements are located and the area where the packaging structure is located.

[0024] Optionally, the display substrate includes a gate driving circuit located in the peripheral area, and at least part of the auxiliary support columns are located in the area of ​​the display substrate where the gate driving circuit is located.

[0025] Optionally, the display panel further includes a packaging structure, the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements;

[0026] The display substrate includes, in a section covered by the packaging structure, a base, a conductive layer, and an insulating layer stacked in sequence along a third direction, wherein the third direction is a direction from the display substrate toward the packaging cover plate;

[0027] The conductive layer has a plurality of first openings, the insulating layer fills the first openings, and the insulating layer has at least one second opening in the area where the first openings are located, a gap is formed between the second opening and the edge of the first opening, and the packaging structure fills the second opening.

[0028] Optionally, the multiple packaging openings of the display substrate in the packaging area include packaging openings in at least one of a first polygon, a second polygon and a closed smooth curve shape, and the packaging openings include the first opening and the second opening, the first polygon is a polygon with obtuse vertex angles, and the second polygon is a polygon with arc chamfered vertex angles.

[0029] Optionally, the display panel further includes a packaging structure, the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements;

[0030] A surface of the display substrate facing the packaging cover plate has a plurality of grooves located in a covering area of ​​the packaging structure, and the packaging structure fills the plurality of grooves;

[0031] The plurality of grooves include grooves in at least one of a first polygon, a second polygon and a closed smooth curve shape. The first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

[0032] Optionally, the material of the groove includes insulating material;

[0033] The display substrate further includes a conductive layer having a plurality of opening areas, the display panel further includes an insulating layer, the insulating layer filling the opening areas of the conductive layer, the grooves are gathered into a plurality of groove clusters, the plurality of groove clusters correspond one-to-one to the plurality of opening areas in the conductive layer, and the grooves in the groove clusters are located in the corresponding opening areas of the conductive layer;

[0034] The multiple opening areas include opening areas in at least one of a first polygon, a second polygon and a closed smooth curve shape. The first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

[0035] In another aspect, an embodiment of the present application provides a display panel, comprising:

[0036] A display substrate comprising a display area and a peripheral area;

[0037] a plurality of light-emitting elements, the plurality of light-emitting elements being located on a surface of a display area side of the display substrate, the plurality of light-emitting elements being arranged in a plurality of rows along a first direction, and the plurality of light-emitting elements being arranged in a plurality of columns along a second direction, wherein the first direction and the second direction are two directions parallel to and intersecting with a plane of the display substrate;

[0038] The multiple columns of light-emitting elements are divided into first light-emitting element columns and second light-emitting element columns arranged alternately along the first direction, the number of light-emitting elements in each of the first light-emitting element columns is equal, the number of light-emitting elements in each of the second light-emitting element columns is equal, the number of light-emitting elements in the first light-emitting element columns is twice the number of light-emitting elements in the second light-emitting element columns, and the light-emitting elements in the first light-emitting element columns and the light-emitting elements in the second light-emitting element columns are staggered along the second direction;

[0039] a packaging cover plate, the packaging cover plate being located on a side of the light-emitting element away from the display substrate;

[0040] A plurality of support columns are located between the display substrate and the package cover plate, and the support columns and the light emitting elements in the second light emitting element column are alternately arranged along the second direction.

[0041] Optionally, the boundary of the light-emitting elements in the second light-emitting element column is a rectangle with at least a portion of one long side thereof being concave inwards, and the long side of the rectangle extends along the second direction;

[0042] The opening area of ​​the light emitting elements in the second light emitting element column is larger than the opening area of ​​the light emitting elements in the first light emitting element column.

[0043] Optionally, the display panel further includes: a packaging structure arranged on a surface of one side of the peripheral area of ​​the display substrate, the packaging structure being located between the display substrate and the packaging cover plate and surrounding the multiple light-emitting elements; and an auxiliary support column arranged between the display substrate and the packaging cover plate and between the area where the multiple light-emitting elements are located and the area where the packaging structure is located.

[0044] Optionally, the display panel further includes a packaging structure, the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements;

[0045] The display substrate includes, in a section covered by the packaging structure, a base, a conductive layer, and an insulating layer stacked in sequence along a third direction, wherein the third direction is a direction from the display substrate toward the packaging cover plate;

[0046] The conductive layer has multiple first openings, the insulating layer fills the first openings, and the insulating layer has at least one second opening in the area where the first opening is located, there is a gap between the second opening and the edge of the first opening, and the packaging structure fills the second opening; the multiple packaging openings of the display substrate in the packaging area include packaging openings in at least one shape of a first polygon, a second polygon and a closed smooth curve, the packaging openings include the first opening and the second opening, the first polygon is a polygon with obtuse vertex angles, and the second polygon is a polygon with arc chamfered vertex angles.

[0047] Optionally, the display panel further includes a packaging structure, the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements;

[0048] The display substrate has a surface on one side facing the packaging cover plate, which is located on the coverage area of ​​the packaging structure, and the packaging structure fills the multiple grooves; the multiple grooves include grooves in at least one shape of a first polygon, a second polygon and a closed smooth curve, the first polygon is a polygon with all vertex angles being obtuse angles, and the second polygon is a polygon with vertex angles being chamfered arcs.

[0049] In another aspect, a display motherboard is provided, comprising:

[0050] Multiple display panels, each comprising: a display substrate including a display area and a peripheral area, a plurality of light-emitting elements located on a surface of the display substrate on one side of the display area, a package cover located on a side of the light-emitting elements away from the display substrate, and a package structure located on a surface of the display substrate on one side of the peripheral area, the package structure being located between the display substrate and the package cover and surrounding the plurality of light-emitting elements;

[0051] A dummy support column is provided, wherein the dummy support column is located outside the outer boundary of the display panel, and the distance between the orthographic projection of the dummy support column on the plane where the display motherboard is located and the orthographic projection of the display panel on the plane where the display motherboard is located is greater than 600 microns.

[0052] Optionally, the cross section of the dummy support column is circular;

[0053] And / or, the outer boundary of the display panel includes a smooth curve section, the multiple dummy support columns are arranged in rows and columns, and the center line of the multiple dummy support columns on the side facing the smooth curve section of the display panel is stepped.

[0054] The present disclosure adopts the following technical solution: a display device, comprising the aforementioned display panel or a display panel cut from the aforementioned display motherboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG. 1 is a cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0056] FIG. 2 is an orthographic projection view of a partial structure of a display panel according to an embodiment of the present disclosure.

[0057] FIG3 is an orthographic projection view of a partial structure of a display panel in an embodiment of the present disclosure.

[0058] FIG4 is an orthographic projection view of a partial structure of a display panel in another embodiment of the present disclosure.

[0059] FIG. 5 is a partial engineering drawing of a display motherboard according to an embodiment of the present disclosure.

[0060] FIG6 is a schematic diagram of a partial structure of a display motherboard according to an embodiment of the present disclosure.

[0061] FIG. 7 is a structural diagram of a display device according to an embodiment of the present disclosure.

[0062] FIG8 is an orthographic projection view of a partial structure of a display panel in another embodiment of the present disclosure.

[0063] FIG9 is an enlarged view of a local detail of the orthographic projection view shown in FIG8 .

[0064] FIG. 10 is a partial layout diagram of a display substrate according to an embodiment of the present disclosure.

[0065] FIG. 11 is a partial layout diagram of a display substrate according to another embodiment of the present disclosure.

[0066] FIG. 12 is a partial layout diagram of a display substrate according to another embodiment of the present disclosure.

[0067] FIG. 13 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0068] FIG. 14 is an overall structural diagram of a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0069] The present disclosure will be further described below with reference to the embodiments shown in the accompanying drawings.

[0070] Figure 1 is a cross-sectional view of a display panel according to an embodiment of the present disclosure (the cross-sectional view may be taken at AA in Figure 2 ). Figure 2 is an orthographic projection of a portion of the display panel structure according to an embodiment of the present disclosure. Figure 3 is an orthographic projection of a portion of the display panel structure according to an embodiment of the present disclosure (Figure 3 may be a schematic diagram of region q1 in Figure 2 ).

[0071] 1 to 3 , an embodiment of the present disclosure provides a display panel including:

[0072] The display substrate 1 includes a display area 1 a and a peripheral area 1 b .

[0073] A plurality of light emitting elements are located on a surface of the display region 1 a of the display substrate 1 (the light emitting elements are not individually labeled in FIG. 1 , for example, the light emitting elements may be arranged into a light emitting element array 5 ).

[0074] The packaging cover plate 2 is located on a side of the light emitting element away from the display substrate.

[0075] With reference to FIG3 and in combination with FIG1, in some embodiments of the present disclosure, the display panel further includes a plurality of support columns 4, the support columns 4 being located between the display substrate 1 and the packaging cover plate 2, the orthographic projection of the support columns 4 on the display substrate 1 being located in the gap between the orthographic projections of the plurality of light-emitting elements on the plane where the display substrate 1 is located, and the orthographic projection of the support columns 4 on the plane where the display substrate 1 is located includes a main body region 41 and a plurality of branch regions 42 connected to the ends of the main body region 41, the main body region 41 and the branch regions 42 are both located between adjacent light-emitting elements, and the extension direction of the branch region 42 has an angle greater than zero and less than 180 degrees with the extension direction of the main body region 41 (that is, the extension direction of the branch region 42 is different from the extension direction of the main body region 41). Alternatively, it can be considered that any branch region 42 is located between adjacent boundaries of two adjacent light-emitting elements.

[0076] To sum up, the display panel provided by the embodiment of the present disclosure has multiple support columns arranged between the display substrate and the packaging cover plate, and the orthographic projection of the support columns on the plane where the display substrate is located includes a main area and multiple branch areas connected to the ends of the main area. The main area and the branch areas are both located between adjacent light-emitting elements, and the extension direction of the branch areas is different from the extension direction of the main area. In this way, by setting support columns whose orthographic projections include branch areas extending in other directions, the cross-sectional area of ​​the support columns is increased, thereby improving the supporting effect of the support columns on the packaging cover plate.

[0077] In addition, by improving the supporting effect of the support column on the package cover, the flatness of different areas of the package cover can be improved, which can improve the Newton ring problem.

[0078] In an exemplary embodiment, referring to FIG. 1 and FIG. 2 , the display panel further includes: a packaging structure 3, which is located between the display substrate 1 and the packaging cover plate 2, and the packaging structure 3 is located on a surface of one side of the peripheral area 1b of the display substrate 1, and the packaging structure 3 surrounds a plurality of light-emitting elements.

[0079] A plurality of light emitting elements are located in the display area 1a (also referred to as the AA area) of the display substrate 1. The present disclosure does not impose any particular limitation on the shape and arrangement of the light emitting elements.

[0080] The peripheral region 1b of the display substrate 1 surrounds the display region 1a. In the peripheral region 1b of the display substrate 1, a gate driving circuit (Gate On Array, GOA) may be disposed, for example.

[0081] The packaging structure 3 is located in the peripheral area 1b and is tightly bonded to the packaging cover plate 2 and the display substrate 1. The packaging structure 3 can support the packaging cover plate 2 and prevent moisture from entering the display panel.

[0082] In an exemplary embodiment, the display substrate 1 and the package cover plate 2 are both rigid structures. Optionally, the package cover plate 2 is made of glass. In some embodiments, the package cover plate 2 may include some functional circuits (e.g., a touch control circuit). In other embodiments, the package cover plate 2 does not include any functional circuits.

[0083] The light-emitting element can be any type of light-emitting element, for example, an organic light-emitting diode, or a quantum dot light-emitting diode. In some embodiments, the encapsulation structure 3 is formed by processing an encapsulating adhesive. The encapsulating adhesive (Frit) includes glass frit and an organic solvent. The glass frit is, for example, borosilicate glass.

[0084] In one exemplary embodiment, when preparing the display panel provided by the embodiments of the present disclosure, encapsulation adhesive is applied to the encapsulation area of ​​the display substrate 1 and then heated to remove the organic solvent therein. Subsequently, the display substrate 1 and the encapsulation cover plate 2 are bonded together, and the encapsulation adhesive, from which the organic solvent has been removed, is irradiated with a laser to form a sealed space between the display substrate 1 and the encapsulation cover plate 2.

[0085] In some embodiments, referring to FIG. 3 , a plurality of light emitting elements 5 are arranged in a plurality of rows along a first direction f1 , and a plurality of light emitting elements are arranged in a plurality of columns along a second direction f2 . The first direction f1 and the second direction f2 are two directions parallel to and intersecting with the plane of the display substrate.

[0086] The main body region 41 is a strip region extending along the second direction f2 . Such a shape of the main body region 41 can improve the utilization of the space between two adjacent light emitting elements 5 in the first direction f1 by the support column 4 , thereby improving the supporting effect of the support column 4 on the package cover.

[0087] In some embodiments, referring to FIG3 , there is at least one pair of adjacent parallel boundaries between two adjacent light-emitting elements 5, and the branch region 42 is located between the parallel boundaries (e.g., a pair of parallel boundaries s1 and s2, and another pair of parallel boundaries s3 and s4 in FIG3 ) and extends in the same direction as the pair of parallel boundaries (e.g., s1 and s2). The extension direction of the branch region 42 is the same as the extension direction of the parallel boundaries of the light-emitting elements, which can improve the utilization of the space between the parallel boundaries of the light-emitting elements by the support column 4, thereby improving the support effect of the support column 4 on the package cover.

[0088] It should be noted that the extension direction of the branch region 42 involved in the embodiment of the present application is the same as the extension direction of the parallel boundaries of the two adjacent light-emitting elements, including: the extension direction of the branch region 42 is absolutely the same as the extension direction of the parallel boundaries of the two adjacent light-emitting elements, and the angle between the extension direction of the branch region 42 and the extension direction of the parallel boundaries of the light-emitting elements is within plus or minus 5°.

[0089] In some embodiments, referring to FIG3 , support pillars 4 (including main body regions 41 and branch regions 42) are periodically arranged in the same row of light-emitting elements, the spacing between support pillars 4 in any two rows of light-emitting elements is equal, and support pillars 4 in two adjacent rows of light-emitting elements are staggered along the second direction f2. Staggered arrangement herein may mean that support pillars 4 in two adjacent rows are not directly opposite each other in the second direction f2.

[0090] Because the support pillars 4 have branch regions 42, the staggered arrangement of the support pillars 4 in two adjacent rows of light-emitting elements along the second direction f2 effectively prevents interference between the structures of the support pillars 4. Furthermore, the spacing between the light-emitting elements in two adjacent rows can be smaller, thereby increasing the density of the light-emitting elements in the display panel and improving the display quality of the display panel.

[0091] In some embodiments, continuing to refer to Figure 3, among the multiple light-emitting elements in the display panel (for example, 5R, 5B and 5G), at least some of the light-emitting elements are adjacent to the support column 4 along the first direction f1, and the boundaries of at least some of the light-emitting elements are polygonal, which includes an edge opposite to the main area 41 of the support column 4 and an edge opposite to the branch area 42 of the support column 4.

[0092] In FIG3 , the boundary of the blue light-emitting element 5B is hexagonal, having a set of opposing sides (s5 and s6) extending along the second direction f2, one of which (s5) opposes the main body region 41 of the support column 4. The hexagon also has four sides extending in directions intersecting both the first direction f1 and the second direction f2, two of which (s2 and s7) oppose the branch region 42 of the support column 4.

[0093] The green light-emitting elements 5G in FIG3 are paired, and the brightness of a pair of green light-emitting elements 5G can be kept equal at all times. This pair of green light-emitting elements 5G constitutes a sub-pixel. The boundary of each green light-emitting element 5G is pentagonal. The pentagon has a side s8 extending along the second direction f2 and opposite the main region 41 of the support column 4. The pentagon also has a side s9 opposite the branch region 42 of the support column 4.

[0094] Similarly, in some embodiments, referring to FIG3 , at least some of the light-emitting elements are adjacent to the support column 4 along the second direction f2 , and the boundaries of these light-emitting elements are polygonal, and the polygon includes edges opposite to the branch regions of the support column 4 adjacent thereto.

[0095] The boundary of the red light-emitting element 5R in FIG3 is hexagonal. The hexagon has a pair of opposite sides d1 and d2 extending along the second direction f2. The hexagon also has four sides extending in a direction intersecting the first direction f1 and the second direction f2. Each of these four sides faces a branch region 42 (i.e., the four sides face four branch regions 42 one by one).

[0096] In some embodiments, referring to FIG. 4 , the support pillars 4 are distributed in alternate rows along the second direction f2 , and the support pillars 4 are arranged in multiple columns along the second direction f2 .

[0097] For example, in the odd-numbered rows shown in FIG4 , support pillars 4 are alternately arranged with light-emitting elements 5, while in the even-numbered rows, support pillars 4 are absent. The area occupied by support pillars 4 in the odd-numbered rows is sufficiently large, and because support pillars 4 have branch regions 42, the total support area of ​​support pillars 4 can be sufficiently large. The absence of support pillars 4 in the even-numbered rows can prevent structural interference between support pillars 4.

[0098] For another example, in even-numbered rows, support pillars 4 and light-emitting elements are arranged alternately, and in odd-numbered rows, no support pillars 4 are arranged.

[0099] In some embodiments, a single light-emitting element (such as 5R, 5B and 5G in Figure 4) is set between two adjacent support columns 4 along the first direction f1, and the boundary of the single light-emitting element is polygonal, which includes edges opposite to the branch areas 42 of the two support columns 4.

[0100] In some embodiments, a single light-emitting element is disposed between two adjacent support pillars 4 along the second direction, and a boundary of the single light-emitting element includes an edge opposite to the branch regions of the two support pillars 4 .

[0101] Optionally, in the embodiment shown in FIG4 , the red light-emitting element 5R is rhombus-shaped as a whole, the blue light-emitting element 5B is hexagonal-shaped, and the green light-emitting element 5G is hexagonal-shaped, but the various light-emitting elements can also be in other shapes, which is not limited in the embodiment of the present application.

[0102] The four sides of the red light-emitting element 5R between two support pillars 4 adjacent along the first direction are respectively opposite to a branch region 42 (i.e., the four sides are opposite to the four branch regions 42 in a one-to-one manner). The blue light-emitting element 5B between two support pillars 4 adjacent along the first direction f1 has one set of opposite sides respectively opposite to the main region 41 of one support pillar 4 (i.e., two opposite sides are opposite to the two main regions 41 in a one-to-one manner), and the remaining four sides are respectively opposite to a branch region 42 (i.e., the four sides are opposite to the four branch regions 42 in a one-to-one manner). The green light-emitting element 5G between two support pillars 4 adjacent along the first direction f1 has one set of opposite sides respectively opposite to the main region 41 of one support pillar 4 (i.e., two opposite sides are opposite to the two main regions 41 in a one-to-one manner), and the remaining four sides are respectively opposite to a branch region 42.

[0103] The boundary of each light emitting element between two supporting pillars 4 adjacent to each other along the second direction f2 has an edge facing the branch region 42 , but does not have an edge facing the main region 41 .

[0104] In some embodiments, referring to FIG. 3 and FIG. 4 , the branch region 42 is polygonal or in the shape of a smooth curve. For example, the branch region 42 shown in FIG. 3 is polygonal, and the branch region 42 shown in FIG. 4 is in the shape of a smooth curve.

[0105] Figure 5 is a partial engineering drawing of a display motherboard provided in an embodiment of the present disclosure. The display motherboard is used to cut display panels. Referring to Figure 5 and in conjunction with Figure 1, in some embodiments, the display panel further includes auxiliary support columns 4a. The auxiliary support columns 4a are located between the display substrate 1 and the package cover plate 2, and between the region where the multiple light-emitting elements are located (which may be the region where the light-emitting element array 5 is located) and the region where the package structure 3 is located.

[0106] The rectangular pattern of the auxiliary support column 4 a in FIG5 only indicates the position of the auxiliary support column 4 a . The cross section of the auxiliary support column 4 a is, for example, circular, rectangular or any other suitable shape.

[0107] The cutting line L in FIG5 indicates the cutting position where the display panel is cut from the display motherboard. The display motherboard includes multiple display panels, which are arranged in a rectangular array, for example. FIG5 only shows a partial boundary area of ​​one of the display panels.

[0108] In some embodiments, the display substrate 1 includes a gate driver circuit 1e, and at least some of the auxiliary support pillars 4a are disposed on the region of the display substrate 1 where the gate driver circuit is located. Optionally, the gate driver circuit 1e is located in the peripheral region 1b of the display substrate 1 and is located inside the region where the package structure 3 is located (the inside here may refer to the side of the package structure 3 that is closer to the center of the display substrate 1).

[0109] The auxiliary support columns 4 a can further increase the supporting area of ​​the package cover plate 2 , which helps to improve the passing rate of the whole-device drop test of the display panel.

[0110] Continuing to refer to FIG8 and FIG9 in combination with FIG1 and FIG2, some other embodiments of the present disclosure further provide a display panel, including:

[0111] The display substrate 1 includes a display area 1 a and a peripheral area 1 b .

[0112] A plurality of light-emitting elements are arranged on a surface of one side of the display area 1a of the display substrate 1 (the plurality of light-emitting elements constitute a light-emitting element array 5, including a red light-emitting element 5R, a green light-emitting element 5G and a blue light-emitting element 5B). The plurality of light-emitting elements are arranged in a plurality of rows along a first direction f1, and the plurality of light-emitting elements are arranged in a plurality of columns along a second direction f2. The first direction f1 and the second direction f2 are two directions parallel to and intersecting with the plane of the display substrate 1.

[0113] The multiple columns of light-emitting elements are divided into first light-emitting element columns P1 and second light-emitting element columns P2 that are alternately arranged along the first direction. The number of light-emitting elements in each first light-emitting element column P1 is equal, and the light-emitting elements in each first light-emitting element column P1 can be aligned and arranged along the second direction f2. The number of light-emitting elements in each second light-emitting element column P2 is equal, and the light-emitting elements in each second light-emitting element column P2 can be aligned and arranged along the second direction f2. The number of light-emitting elements in the first light-emitting element column P1 is twice the number of light-emitting elements in the second light-emitting element column, and the light-emitting elements in the first light-emitting element column P1 and the light-emitting elements in the second light-emitting element column P2 are staggered along the second direction f2.

[0114] The packaging cover plate 2 is located on a side of the light emitting element away from the display substrate 1 .

[0115] Multiple support columns 4 are located between the display substrate 1 and the package cover plate 2 . The support columns 4 and the light emitting elements in the second light emitting element column P2 are alternately arranged along the second direction. The multiple support columns 4 can be aligned and arranged along the first direction f1 .

[0116] In the disclosed embodiment, two structures on the display substrate 1 are aligned along a predetermined direction (e.g., a first direction f1 and a second direction f2) parallel to the plane of the display substrate 1. This means that the distance between two straight lines passing through the centers of the orthographic projections of the two structures on the plane of the display substrate 1 and parallel to the predetermined direction is less than half the dimension of the orthographic projections of the two structures on the plane of the display substrate 1 in a direction perpendicular to the predetermined direction. Ideally, the centers of the orthographic projections of the two structures on the plane of the display substrate 1 lie on the same straight line parallel to the predetermined direction.

[0117] In the embodiment of the present disclosure, the two structures on the display substrate 1 are staggered along a predetermined direction parallel to the plane of the display substrate 1. This means that the distance between two straight lines passing through the centers of the orthographic projections of the two structures on the plane of the display substrate 1 and parallel to the predetermined direction is greater than half the dimension of the orthographic projections of the two structures on the plane of the display substrate 1 in a direction perpendicular to the predetermined direction. Ideally, the orthographic projections of the two structures on the plane of the display substrate 1 do not overlap in the predetermined direction.

[0118] The first light-emitting element column P1 can be equipped with smaller light-emitting elements (such as the red light-emitting element 5R and the green light-emitting element 5G in FIG8 ), while the second light-emitting element column P2 can be equipped with larger light-emitting elements (such as the blue light-emitting element 5B in FIG8 ). Taking the display panel equipped with red, green, and blue light-emitting elements as an example, since the second light-emitting element column P2 only needs to have half the number of light-emitting elements as the first light-emitting element column P1, the area available for the support pillars 4 in the second light-emitting element column P2 is sufficiently large, allowing the support pillars 4 to more stably support the package cover plate 2.

[0119] In some embodiments, the opening area of ​​the light emitting elements in the second light emitting element column P2 is larger than the opening area of ​​the light emitting elements in the first light emitting element column P1.

[0120] The opening area of ​​a light-emitting element refers to the area of ​​the light-emitting surface of the light-emitting element.

[0121] In some other embodiments, the opening area of ​​the light emitting elements in the second light emitting element column P2 is equal to the opening area of ​​at least one light emitting element in the first light emitting element column P1.

[0122] In some embodiments, the openings of the light-emitting elements in the first light-emitting element column P1 are rectangular.

[0123] Since the number of light-emitting elements in the first light-emitting element column P1 is large and they are regularly arranged, the opening area of ​​the rectangular opening is larger than that of openings of other shapes.

[0124] In other embodiments, the openings of the light emitting elements in the first light emitting element column P1 are in other shapes such as diamond, pentagon, or hexagon.

[0125] In some embodiments, referring to FIG8 and FIG9 , the openings of the light emitting elements in the second light emitting element column P2 are in the shape of a rectangle with a portion of one long side recessed inward, and the long side of the rectangle extends along the second direction f2 .

[0126] In the embodiment shown in FIG9 , the light-emitting elements in the second light-emitting element column P2 are blue light-emitting elements 5B. The blue light-emitting elements 5B are generally rectangular in shape, with their two long sides extending along the second direction f2. The middle portion of one long side is recessed toward the interior of the rectangle, forming a recessed section 5B1. The recessed section 5B1 is used to avoid vias H or other structures. Vias H, for example, are vias in the display substrate that connect pixel circuitry (not shown) and a light-emitting layer (not shown), or any vias that connect two conductive structures.

[0127] Since the number of light-emitting elements in the second light-emitting element column P2 is less than that in the first light-emitting element column P1, the opening area of ​​the light-emitting elements in the second light-emitting element column P2 can be set to be large enough, and the concavity of a certain boundary inward for structural avoidance will not affect the light emission of the light-emitting element.

[0128] In some embodiments, referring to FIG8 , the support column 4 has a major axis L1a extending along a first direction f1 and a minor axis L2a extending along a second direction. In these embodiments, the orthographic projection of the support column 4 onto the plane of the display panel has two perpendicular symmetry axes L1a and L2a. In other words, the major axis L1a of the support column 4 is arranged parallel to the first direction f1 to avoid the light-emitting elements in the second direction, leaving more space for the light-emitting elements in the second direction f2, thereby allowing the light-emitting elements in the second light-emitting element column P2 to be arranged with a sufficiently large area.

[0129] In other embodiments, if the area for arranging the support column 4 is large enough, the support column 4 has a major axis extending along the second direction f2 and a minor axis extending along the first direction f1. The area of ​​the support column 4 can be set relatively large.

[0130] Since the area for arranging the support column 4 in the second light-emitting element column P2 is relatively large, the orthographic projection of the support column 4 on the plane where the display panel is located is not limited to a polygon, and may also be a circle or an ellipse, for example.

[0131] In some embodiments, referring to FIG. 8 , the first light emitting element column P1 includes red light emitting elements 5R and green light emitting elements 5G alternately arranged along the second direction f2 , and the second light emitting element column P2 includes blue light emitting elements 5B.

[0132] The blue light-emitting element 5B has the largest opening area, so the blue light-emitting element 5B is disposed in the second light-emitting element column P2.

[0133] Figure 13 may be a cross-sectional view of Figure 12 at point kk. Referring to Figures 10, 12 and 13, and in combination with Figure 1, in the display panels of other embodiments of the present disclosure, the section of the display substrate 1 covered by the packaging structure 3 includes a base 10, a conductive layer 13 and an insulating layer 12 stacked in sequence along a third direction f3, and the third direction f3 is the direction in which the display substrate 1 points to the packaging cover plate 2.

[0134] The conductive layer 13 has a plurality of first openings H1, and the insulating layer 12 fills the first openings H1. The insulating layer 12 also has at least one second opening H2 in the region where the first openings H1 are located, with a gap between the second opening H2 and the first opening H1 in which it is located. It should be noted that, to clearly illustrate the first openings H1 and the second openings H2, the insulating layer 12 is not shown in Figures 10 and 11, but the second openings H2 in the insulating layer 12 are shown. This is not a limitation of the present embodiment.

[0135] The packaging structure 3 fills the second opening H2 , thereby increasing the contact area between the packaging structure 3 and the display substrate 1 , thereby improving the tightness of the bonding between the packaging structure 3 and the display substrate 1 .

[0136] Among them, at least one first opening H1 is at any position parallel to the orthographic projection boundary of the plane where the display substrate is located, and the angle between the left tangent and the right tangent is greater than 90°, and / or, at least one second opening H2 is at any position parallel to the orthographic projection boundary of the plane where the display substrate is located, and the angle between the left tangent and the right tangent is greater than 90°, and the plane parallel to the display substrate is the plane where the display substrate is located.

[0137] Optionally, the multiple packaging openings in the packaging area of ​​the display substrate include packaging openings in at least one of a first polygon, a second polygon and a closed smooth curve shape, and the packaging openings include a first opening H1 and a second opening H2. The first polygon is a polygon with obtuse vertex angles, and the second polygon is a polygon with arc chamfered vertex angles.

[0138] Under such a structure, there is no right angle or acute angle at the boundary between the first opening H1 and the second opening H2, and the transition at the boundary between the first opening H1 and the second opening H2 is relatively smooth, which helps to distribute the stress more dispersedly at the boundary between the first opening H1 and the second opening H2, thereby reducing the risk of structural fracture at the first opening H1 or the second opening H2, and helping to improve the structural stability of the display substrate.

[0139] Optionally, the display substrate 1 further includes a buffer layer 11, the buffer layer 11 is located on the base 10, and the conductive layer 13 is located on the buffer layer 11. The second opening H2 of the insulating layer 12 exposes the buffer layer 11 on the base 10.

[0140] Optionally, the material of the buffer layer 11 may include an inorganic material, such as silicon oxide, silicon nitride, etc., to achieve the effect of blocking water and oxygen and blocking alkaline ions.

[0141] Optionally, the substrate 10 is a rigid substrate, for example, the substrate 10 may be made of glass.

[0142] The display substrate 1 and the package cover plate 2 are both rigid structures. In some embodiments, the package cover plate 2 is made of glass. In some embodiments, some functional circuits (e.g., a touch control circuit) may be disposed on the package cover plate 2. In other embodiments, no functional circuits are disposed on the package cover plate 2.

[0143] The light emitting element is, for example, an organic light emitting diode or a quantum dot light emitting diode. In some embodiments, the package structure 3 is formed by processing a packaging adhesive. The packaging adhesive comprises glass frit and an organic solvent. The glass frit is, for example, borosilicate glass.

[0144] Referring to Figure 10 , at least one first opening H1 is polygonal, with each of the polygon's vertex angles being obtuse. At the polygon's vertex angle, the angle between the left and right tangents is obtuse. At the rest of the polygon, the angle between the left and right tangents is 180°. The shape of the first opening H1 can be, for example, a regular pentagon or a regular hexagon.

[0145] 11 , the opening shape of at least one first opening H1 is a closed smooth curve. The smooth curve is differentiable at all locations, and the angle between the left tangent and the right tangent at any position is 180°.

[0146] A closed smooth curve is, for example, a circle or an ellipse.

[0147] In some embodiments, the at least one first opening H1 is shaped like a polygon with rounded corners, and at the intersection of the rounded corner section and the straight section, the included angle between the left tangent and the right tangent is an obtuse angle.

[0148] Referring to Figure 10 , at least one second opening H2 is polygonal, with each of the polygon's vertex angles being obtuse. At the polygon's vertex angle, the angle between the left and right tangents is obtuse. At the rest of the polygon, the angle between the left and right tangents is 180°. The shape of the second opening H2 can be, for example, a regular pentagon or a regular hexagon.

[0149] 11 , the opening shape of the at least one second opening H2 is a closed smooth curve. The smooth curve is differentiable at all locations, and the angle between the left tangent and the right tangent at any position is 180°.

[0150] A closed smooth curve is, for example, a circle or an ellipse.

[0151] In some embodiments, the at least one second opening H2 is shaped like a polygon with rounded corners, and at the intersection of the rounded corner section and the straight section, the included angle between the left tangent and the right tangent is an obtuse angle.

[0152] For example, in some other embodiments, the first opening H1 may be circular or elliptical, and the second opening H2 may be rectangular, circular, or octagonal with rounded corners.

[0153] In the above design, the tips of the opening region (first opening H1 ) of the conductive layer 13 and the opening region (second opening H2 ) of the insulating layer 12 are smoothly transitioned, thereby avoiding excessive stress concentration and improving the reliability of the display device.

[0154] In some embodiments shown in FIG. 11 , the diameter of the first opening H1 is 35 micrometers (um) to 45 um, the diameter of the second opening H2 is 5 um to 7 um, and the gap size of the second opening H2 is 3 um to 4 um.

[0155] Optionally, in an embodiment shown in FIG. 11 , the diameter of the first opening H1 is 40 um, the diameter of the second opening H2 is 6 um, and the gap size between adjacent second openings H2 is 3.5 um.

[0156] Based on the same inventive concept, with continued reference to FIG1 and FIG14 , some embodiments of the present disclosure further provide a display panel, comprising: a display substrate 1 and a packaging cover plate 2 arranged opposite to each other, a plurality of light-emitting elements arranged on the surface of the display substrate 1 facing the packaging cover plate 2, and a packaging structure 3 arranged between the display substrate 1 and the packaging cover plate 2 and surrounding the plurality of light-emitting elements.

[0157] The display substrate 1 has a plurality of grooves 1f on its surface facing the package cover 2, located in the area covered by the package structure 3. The package structure 3 fills these grooves 1f. This increases the contact area between the package structure 3 and the display substrate 1, thereby enhancing the tightness of the connection between the package structure 3 and the display substrate 1.

[0158] At least one groove 1f has an angle greater than 90° between the left tangent and the right tangent at any position parallel to the orthographic projection boundary of the display substrate plane, and the plane parallel to the display substrate is the plane of the display substrate 1 .

[0159] Optionally, the plurality of grooves 1f include grooves in at least one of a first polygon, a second polygon and a closed smooth curve shape, the first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

[0160] The opening shape of the groove 1f is the same as the opening shape of the second opening H2 in the insulating layer 12. The corners of the groove 1f are relatively smooth, resulting in relatively low stress at the corners during a full-device drop test. Furthermore, the corners of the package structure 3 filled in the groove 1f are relatively smooth, resulting in relatively low stress within the package structure 3 during a full-device drop test. All of these factors contribute to improved reliability of the display panel and the display device it comprises.

[0161] In some embodiments, the opening of at least one groove 1f is circular or oval.

[0162] In some embodiments, the surface of the groove 1f is formed of an insulating material. For example, the sidewalls of some grooves 1f are formed of an insulating material disposed in the same layer as an interlayer dielectric layer (the interlayer dielectric layer is a film layer in a display panel) and an insulating material disposed in the same layer as a passivation layer (the passivation layer is a film layer in a display panel), and the bottom wall of the groove 1f is formed of a buffer layer.

[0163] In some embodiments, referring again to Figures 1, 12 and 14, the substrate 1 is shown to include a conductive layer 13, the conductive layer 13 has a plurality of opening areas, the insulating material fills the opening areas of the conductive layer 13, the grooves extend into the opening areas of the conductive layer 13, the grooves 1f are gathered into a plurality of groove clusters 1g, the groove clusters 1g are arranged in one-to-one correspondence with the opening areas in the conductive layer 13, and the grooves 1f in the groove clusters 1g are located in the corresponding opening areas of the conductive layer 13.

[0164] The opening area of ​​the conductive layer 13 is the opening area of ​​the first opening H1 . The tip of the opening area of ​​the conductive layer 13 has a smooth transition to avoid excessive stress concentration, thereby improving the reliability of the display device.

[0165] In some embodiments, at any position of the orthographic projection boundary of at least one opening area parallel to the plane where the display substrate is located, the included angle between the left tangent and the right tangent is greater than 90°.

[0166] In some embodiments, the plurality of grooves 1f include grooves in at least one of a first polygon, a second polygon, and a closed smooth curve shape. The first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

[0167] In some embodiments, at least one opening region is in the shape of a closed smooth curve.

[0168] In some embodiments, at least one open area is circular or oval in shape.

[0169] To sum up, the display panel provided by the embodiment of the present disclosure has multiple support columns arranged between the display substrate and the packaging cover plate, and the orthographic projection of the support columns on the plane where the display substrate is located includes a main area and multiple branch areas connected to the ends of the main area. The main area and the branch areas are both located between adjacent light-emitting elements, and the extension direction of the branch areas is different from the extension direction of the main area. In this way, by setting support columns whose orthographic projections include branch areas extending in other directions, the cross-sectional area of ​​the support columns is increased, thereby improving the supporting effect of the support columns on the packaging cover plate.

[0170] In addition, by improving the supporting effect of the support column on the package cover, the flatness of different areas of the package cover can be improved, which can improve the Newton ring problem.

[0171] Based on the same inventive concept, referring to FIG. 7 , some embodiments of the present disclosure further provide a display device including a front display panel.

[0172] A display device is a product or component with a display function. Examples of a display device include a display module, a head-mounted display device, a monitor, a mobile phone, a tablet computer, and a smart interactive terminal.

[0173] The display type of the display device is, for example, an organic light emitting diode display or a quantum dot light emitting diode display.

[0174] The display device shown in FIG. 7 includes a polarizer 100 covering the encapsulation cover plate 2 , and a protection cover plate 200 covering the polarizer 100 .

[0175] In some embodiments, the material protecting the protective cover 200 includes glass.

[0176] Continuing to refer to FIG5 and FIG6 and combining FIG1 and FIG2, an embodiment of the present disclosure further provides a display motherboard, including:

[0177] Multiple display panels, the display panels include: a display substrate 1, including a display area 1a and a peripheral area 1b, a plurality of light-emitting elements located on a surface of the display substrate 1 on one side of the display area 1a, a packaging cover plate 2 arranged on a side of the light-emitting elements away from the display substrate 1, and a packaging structure 3 located on a surface of a side of the peripheral area 1b of the display substrate 1, the packaging structure 3 being located between the display substrate 1 and the packaging cover plate 2 and surrounding the plurality of light-emitting elements.

[0178] Multiple dummy support columns 4b are located outside the outer boundary of the display panel, and the distance d between the orthographic projection of the dummy support columns 4b on the plane where the display motherboard is located and the orthographic projection of the display panel on the plane where the display motherboard is located is greater than 600um.

[0179] The inventors of the present disclosure have found that when the distance d between the dummy support column 4b and the cutting line L is too small, the surface of the display panel between the position of the dummy support column 4b and the position of the cutting line L has a large slope, and black edge defects are likely to occur during cutting by the cutter wheel. When the height of the packaging structure 3 does not match the spacing between the display substrate 1 and the packaging cover plate 2, edge halo defects (Newton rings) are also likely to occur. When the distance between the dummy support column 4b and the cutting line L is far enough, the black edge and Newton ring defects are significantly improved. 600um is the lower limit of the safe distance between the dummy support column 4b and the cutting line L.

[0180] In some embodiments, the cross section of the dummy support column 4b is circular. The dummy support column 4b is separated from the display panel after a cutting process.

[0181] In some embodiments, the outer boundary of the display panel includes a smooth curved section, the multiple dummy support pillars 4b are arranged in rows and columns (herein, the rows and columns arrangement may refer to the multiple dummy support pillars 4b being arranged in multiple rows and columns), and the center line connecting the multiple dummy support pillars 4b on one side of the smooth curved section of the display panel is stepped. This allows the number of dummy support pillars 4b to be as large as possible within the allowed space.

[0182] The display panel is, for example, circular or rounded polygonal. The display device provided in the embodiment of the present application can include various smart wearable devices such as smart watches. When the display panel is circular or rounded polygonal, it can improve the aesthetics of the smart wearable device and enhance the user experience.

[0183] In some embodiments, the materials of the support pillars 4 , the auxiliary support pillars 4 a and the dummy support pillars 4 b all include polyimide.

[0184] It should be noted that the features provided in the above embodiments can be appropriately combined.

[0185] The various embodiments in the present disclosure are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0186] The scope of protection of the present disclosure is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the scope and spirit of the present disclosure. If such modifications and variations fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

[0187] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0188] In this application, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

Claims

1. A display panel, comprising: A display substrate, comprising a display area and a peripheral area; A plurality of light emitting elements, wherein the plurality of light emitting elements are located on a surface of a display area side of the display substrate; A packaging cover plate, the packaging cover plate is located on a side of the light emitting element away from the display substrate; A plurality of support columns, wherein the support columns are located between the display substrate and the packaging cover plate, the orthographic projections of the support columns on the display substrate are located at gaps between the orthographic projections of the plurality of light-emitting elements on the display substrate, and the orthographic projections of the support columns on the display substrate include a main body region and a plurality of branch regions connected to ends of the main body region, the main body region and the branch regions are both located between adjacent light-emitting elements among the plurality of light-emitting elements, and an angle between an extension direction of the branch region and an extension direction of the main body region is greater than zero and less than 180 degrees.

2. The display panel according to claim 1, wherein the plurality of light emitting elements are arranged in a plurality of rows along a first direction, and the plurality of light emitting elements are arranged in a plurality of columns along a second direction, and the first direction and the second direction are two directions parallel to and intersecting with the plane where the display substrate is located; The main body area is a strip area extending along the second direction.

3. The display panel according to claim 2, characterized in that: Two light emitting elements adjacent to the branch region have at least one pair of parallel boundaries parallel to each other, the branch region is located between the pair of parallel boundaries, and the extension direction of the branch region is the same as the extension direction of the pair of parallel boundaries.

4. The display panel according to claim 3, characterized in that: The support columns in two adjacent rows of the light emitting elements are arranged in a staggered manner along the second direction.

5. The display panel according to claim 4, characterized in that: At least some of the plurality of light-emitting elements are adjacent to the support column along the first direction, and the boundaries of at least some of the light-emitting elements are polygonal, and the polygon includes an edge opposite to the main body region of the support column and an edge opposite to the branch region of the support column; At least some of the plurality of light emitting elements are adjacent to the support column along the second direction, and boundaries of the some of the light emitting elements are polygonal, and the polygon includes sides opposite to the branch regions of the support column adjacent to the some of the light emitting elements.

6. The display panel according to claim 3, characterized in that: Along the second direction, the support columns are distributed in alternate rows, and the support columns are arranged in multiple columns along the second direction; A single light-emitting element is disposed between two support columns adjacent to each other along the first direction, and the boundary of the single light-emitting element is a polygon, and the polygon includes a side opposite to the branch regions of the two support columns; A single light emitting element is arranged between two support pillars adjacent to each other along the second direction, and a boundary of the single light emitting element includes an edge opposite to the branch regions of the two support pillars.

7. The display panel according to claim 1, characterized in that: The branch region is in a polygonal shape or a smooth curve shape.

8. The display panel according to claim 1, characterized in that: The display panel further comprises: a packaging structure, the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light emitting elements; An auxiliary support column is located between the display substrate and the packaging cover plate, and between an area where the plurality of light-emitting elements are located and an area where the packaging structure is located.

9. The display panel according to claim 8, characterized in that: The display substrate includes a gate driving circuit located in the peripheral area, and at least part of the auxiliary supporting columns are located in the area where the gate driving circuit of the display substrate is located.

10. The display panel according to claim 1, characterized in that: The display panel further comprises a packaging structure, wherein the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements; The display substrate includes a base, a conductive layer, and an insulating layer stacked in sequence along a third direction in a section covered by the packaging structure, wherein the third direction is a direction from the display substrate to the packaging cover plate; The conductive layer has a plurality of first openings, the insulating layer fills the first openings, and the insulating layer has at least one second opening in the area where the first openings are located, a gap is provided between the second opening and the edge of the first opening, and the packaging structure fills the second opening.

11. The display panel according to claim 10, characterized in that: The multiple packaging openings of the display substrate in the packaging area include packaging openings in at least one of a first polygon, a second polygon and a closed smooth curve shape, and the packaging openings include the first opening and the second opening. The first polygon is a polygon with obtuse vertex angles, and the second polygon is a polygon with arc chamfered vertex angles.

12. The display panel according to claim 1, characterized in that: The display panel further comprises a packaging structure, wherein the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements; A surface of the display substrate facing the packaging cover plate has a plurality of grooves located on the covering area of ​​the packaging structure, and the packaging structure fills the plurality of grooves; The plurality of grooves include grooves in at least one of a first polygon, a second polygon and a closed smooth curve shape, the first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

13. The display panel according to claim 12, characterized in that: The material of the groove includes insulating material; The display substrate further comprises a conductive layer, the conductive layer having a plurality of opening regions, the display panel further comprises an insulating layer, the insulating layer fills the opening regions of the conductive layer, the grooves are gathered into a plurality of groove clusters, the plurality of groove clusters correspond one-to-one to the plurality of opening regions in the conductive layer, and the grooves in the groove clusters are located in the corresponding opening regions of the conductive layer; The multiple opening areas include opening areas in at least one of a first polygon, a second polygon and a closed smooth curve shape. The first polygon is a polygon with obtuse vertices, and the second polygon is a polygon with arc chamfered vertices.

14. A display panel, characterized in that: include: A display substrate, comprising a display area and a peripheral area; A plurality of light-emitting elements, the plurality of light-emitting elements are located on a surface of a display area side of the display substrate, the plurality of light-emitting elements are arranged in a plurality of rows along a first direction, and the plurality of light-emitting elements are arranged in a plurality of columns along a second direction, and the first direction and the second direction are two directions parallel to and intersecting with the plane where the display substrate is located; The plurality of columns of light-emitting elements are divided into first light-emitting element columns and second light-emitting element columns alternately arranged along the first direction, the number of light-emitting elements in each of the first light-emitting element columns is equal, the number of light-emitting elements in each of the second light-emitting element columns is equal, the number of light-emitting elements in the first light-emitting element column is twice the number of light-emitting elements in the second light-emitting element column, and the light-emitting elements in the first light-emitting element column and the light-emitting elements in the second light-emitting element column are staggeredly arranged along the second direction; A packaging cover plate, the packaging cover plate is located on a side of the light emitting element away from the display substrate; A plurality of support columns are disposed between the display substrate and the package cover plate, and the support columns and the light emitting elements in the second light emitting element column are alternately arranged along the second direction.

15. The display panel according to claim 14, characterized in that: The boundary of the light emitting elements in the second light emitting element column is a rectangle with at least a portion of one long side thereof being recessed inwards, and the long side of the rectangle extending along the second direction; The opening area of ​​the light emitting elements in the second light emitting element column is larger than the opening area of ​​the light emitting elements in the first light emitting element column.

16. The display panel according to claim 14, characterized in that: The display panel also includes: a packaging structure arranged on a surface of one side of the peripheral area of ​​the display substrate, the packaging structure is located between the display substrate and the packaging cover plate and surrounds the multiple light-emitting elements; an auxiliary support column arranged between the display substrate and the packaging cover plate and located between the area where the multiple light-emitting elements are located and the area where the packaging structure is located.

17. The display panel according to claim 14, characterized in that: The display panel further comprises a packaging structure, wherein the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements; The display substrate includes a base, a conductive layer, and an insulating layer stacked in sequence along a third direction in a section covered by the packaging structure, wherein the third direction is a direction from the display substrate to the packaging cover plate; The conductive layer has a plurality of first openings, the insulating layer fills the first openings, and the insulating layer has at least one second opening in the region where the first openings are located, a gap is provided between the second opening and an edge of the first opening, and the packaging structure fills the second opening; The multiple packaging openings of the display substrate in the packaging area include packaging openings in at least one of a first polygon, a second polygon and a closed smooth curve shape, and the packaging openings include the first opening and the second opening. The first polygon is a polygon with obtuse vertex angles, and the second polygon is a polygon with arc chamfered vertex angles.

18. The display panel according to claim 14, characterized in that: The display panel further comprises a packaging structure, wherein the packaging structure is located between the display substrate and the packaging cover plate, and the packaging structure is located on a surface of one side of the peripheral area, and the packaging structure surrounds the plurality of light-emitting elements; A plurality of grooves are provided on a surface of one side of the display substrate facing the packaging cover plate and located in a coverage area of ​​the packaging structure, and the packaging structure fills the plurality of grooves; the plurality of grooves include grooves in at least one of a first polygon, a second polygon and a closed smooth curve shape, the first polygon is a polygon with all its vertex angles being obtuse angles, and the second polygon is a polygon with its vertex angles being chamfered arcs.

19. A display motherboard, characterized in that: include: A plurality of display panels, the display panels comprising: a display substrate including a display area and a peripheral area, a plurality of light emitting elements located on a surface of the display substrate at one side of the display area, a packaging cover located on a side of the light emitting elements away from the display substrate, and a packaging structure located on a surface of the display substrate at one side of the peripheral area, the packaging structure being located between the display substrate and the packaging cover and surrounding the plurality of light emitting elements; A plurality of dummy support columns are provided, wherein the plurality of dummy support columns are located outside the outer boundary of the display panel, and the spacing between the orthographic projection of the dummy support columns on the plane where the display motherboard is located and the orthographic projection of the display panel on the plane where the display motherboard is located is greater than 600 microns.

20. The display motherboard according to claim 19, characterized in that: The cross section of the virtual support column is circular; And / or, the outer boundary of the display panel includes a smooth curve section, the plurality of dummy support columns are arranged in rows and columns, and a center line connecting the plurality of dummy support columns on a side of the smooth curve section of the display panel is in a stepped shape.

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